Supporting means for boring-rods.



PATENTEDAU-GJ, 1906.

A. MUMMARA. SUPPORTING MEANS FOR BORING RODS.

APPLICATION FILED DBO. 29. 1903.

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f To all whom it may concern.-

UNITED STATES PATENT OFFICE.-

SUPPORTING MEANS FOR BORING-RODS.

, Specification of "Letters Patent.

Patented Aug. 7, 1906,

Application filed December 29. 1903. $erial No. 187.029.

Be it known that I, ALEXANDER MONA- MARA, a citizen of the UnitedStates, residing at .Randfontein, Transvaal, have invented certain newand useful Improvements in Supporting Means for Boring-Rods, of whichthe following is a s ecification.

\ This invention re ates to boring apparatus and to a means forsupporting and distributing the load or weight of the boring-rods. As atpresent constructed this is accomplished by means of a collar fixed ontothe drivingspindle of the apparatus with ball-bearings arranged belowand above said collar in such manner that the lower bearing supports theload and permits the driving-spindle to be rotated, while the topbearing serves to take up any back thrust of the driving-spindle. Fromthis it will be .understood that the whole weight of the boring-rods iscarried by the lower bearing, and in boring to great depths this lowerbearing is subjected to a large amount of wear. This results in theworking of such apparatus being repeatedly sto )ped for the removal andrenewal of the balls or the rooved plates between which the balls are paced.

Now the object of the present invention is to obviate the defects of theexisting arrangements and to so construct the apparatus as to distributethe load or weight over a plurality of such bearings. Thecounterbalancmg arrangement now used in deep boring is unnecessary withmy lnvention.

The invention W111 now be described in detail by aid of the accompanyingdrawings.

In the drawings, Figure 1 shows the arrangement in front elevation. Fig.2 is a sectional elevation. Fig. 3 is a sectional plan on line w y, Fig.2; and Fig. 4 is a plan.

A represents the driving-spindle of the ap paratus, which may be rotatedin the ordinary or any other suitable manner. To the driving-spindle Aare attached the boringrods, and the connections between the same may bemade in the usual way. On the driving-spindle A is screwed or otherwisesecurely fixed the collar B, which serves for support- 'ing thedriving-spindle A and the boringrods, attached thereto in suchmannerthat said-s indle and rods may be freely rotated.

Roun the driving-spindle A above the fixed collar B is arran ed a loosecollar C, which is 7 fitted with a bus 0, of brass or other suitablemetal. Between the collars B is arranged the thrust-bearing, whichconsists of the two rings or plates (1 d which are grooved to receivetheantifriction-balls (1 This bearing is provided to take up any backthrust, and this arrangement embodies no feature of the presentinvention. Round the driving-spin- -dle Aimmediately below the fastcollarB is arranged a loose sleeve or ferrule D. The ferrule D at the toabuts the under side of the fast collar B. mmediately beneath the collarB and arranged round the upper portion of the ferrule D is anintermediate bearing of similar construction. to the top bearing orcomprising the grooved plates 6 e, between which are interposed theantifriction-balls e The under side of the collar B rests on the top ofthe upper plate e, which latter is free to rotate round the sleeve D.Round the lower portion of the ferrule D is arranged a large plate E,which forms a central flange round the driving-spindle A. In the top ofthe plate E is formed an annularrecess in which is located the lowerplate e of the intermediate bearing. Round the driving-spindle Aimmediately beneath the center flange or plate E is provided a third andbottom bearing of similar construction to the thrust and intermediatebearings. The top late f of the bottom bearing fits into an annu arrecess formed in the under side of the plate E. The lower extremity ofthe sleeve or ferrule D rests upon the top platef of the bottom bearing.f is the bottom plate of the bottom bearing, and f represents theantifriction-balls inter osed between the plates f f A ring or was or f3 is arranged round the drivingspindle beneath the bottom plate f. Onthe driving-spindle below the bottom bearing is loosely arranged thequill-flange F, and screwed'into the flange or plate F is the brass orother quill G, which loosely incloses the driving-spindle A.

In the edge of the intermediate plate or center flange E are screwedfour stanohions or hangers in the form of downwardly-projectingeyepieces h. In the lower extremities of the supports it are pivotedfour horizontallyarranged levers h. The levers h project in ward, andthe tops of their inner ends project beneath and abut the bottom of'thering or washer f. The levers h are fulcrumed on studs or centers i,quill-flange'F.

' The several parts of the arrangement are firmly connected bymeans ofthe four long t iebolts j, which project through holes in the arrangedin the top of the I loose collar C and uill-flarige F and are securedbymeans of t e nuts is, screwed on the extremities thereof.

The distribution of the load or weight be- .tween the intermediate andbottom bearin s is effected by the fixed collar B, resting irectly,onthe top bearing and transmitting approximately half of the load throughthe medium of the levers h to the lower bearing. In the arrangementillustrated the additional or bottom bearing receives approximatelyone-half of the weight or load. It will be' obvious that two or moreadditional bearings-may be provided and that by so arranging orfulcruming the levers h the load may be more 'or less evenly distributed.Over the whole series of such bearings. In case two additional bearings.are rovided then the-top set oil levers h woul be fulcrurned at a ointapproximately one-third of their length from the pivot and the lower setof levers be fulc'rumed at a point about two-thirds of their length fromthe pivots, thus throwing approximately one-third of the total load oneach of the three bearings. In such an arrangement the top sleeve orferrule D would be made thicker and the lower sleeve or ferrule for thelowermost bearing be arranged so as to rest against it at the bottomend. Another late, such as E, for carrying the lower set of evers wouldalso be arranged between the plates E F and the centers t, for the u perset of levers would be fixed in the to- '0 the additional plate.

Enstead of providing four of the levers it three or any other suitablenumber may be employed for each of the bearings.

What I claim as my invention, and desire to protect by Letters Patent,is

1. In apparatus of the nature specified, in-combination, thedriving-spindle and'its rsu'pporting -collar fixed thereon, theballbearing extending. round the" driving-spin-' dle u on which thecollar rests, an additional ball earing extending round thedrivingspindle beneath the bearing directly supporting the collar, andmeans for distributing the weight to be supported, between the twobearings, substantially as described.

2. ,In apparatus oi the nature specified,

in combination, the driving-spindle and its supporting-collar fixedthereon, the ballbearing extending round the drivin spindle u on whichthe collar rests, a plurality of addltional ball-bearings extendinground the driving-spindle beneath the bearing directly supporting thecollar, and means for distributlng the weight to be supported betweenthe whole series of bearings, substantially as described.

3.' In apparatus of the class specified, in combination, thedriving-spindle and its supporting-collar fixed thereon, theball-bearing extending round the driving-spindle u on' which thecollarrests, a center flange or p ate arranged below and supporting thebearing, an additional ball-bearlng arranged below the plate and asleeve or ferrule extdnding round the driving-spindle abutting at oneextremity the supporting-collar and at the other extremity resting onthe additional bearing, and means carried by the center flange or platefor transmitting a portion of the weight of the boringrods from thebearing immediately beneath the supporting-collar to the additionalbearing arranged beneath said center flange or plate, substantially asdescribed.

4. In apparatus of: the class specified, in combination, thedriving-spindle and the sup.- porting-collar fixed thereon, the bear'-'surrounding'the driving-spindle on whi'e supporting-collar rests, thecenter fla e or plate extending round the driving-sp" e for supportingthe aforementioned bearing, an addltional bearing extending round thedriving-spindle below the center plate, a sleeve or ferrule extendinground the driving-spin:- dle abutting at the one end thesupportingcollar and at the other end resting upon the additionalbearing, and a series of levers. carried by the center plate fordistributing the wei ht between thetwo bearings, substantia y asdescribed.

5, In apparatus of the class s cified in combination, thedriving-spindle the sup porting-collar B fixed thereon, the center angeor plate E, the ballbearing interposed between the supporting-collar Band plate or flange E, the ball-bearing beneath the center flange orplate E, the ferrule-or sleeve D surrounding the driving-spindleAabutting the supporting-collar B at the one end and resting at the otherend on the hear ing beneath the plate E, the hangers h fixed in thecenter plate or flange E, the levers h pivoted to the lower ends of thehangers h with their inner ends engaging the under side of the bearingbelow the plate or'fl-ange- E, the quill-flange F and the centerst forthe levers 72/ arranged in the top of the quiltflange, substantially asdescribed.

6. In apparatus of the class specified, in combination, thedriving-spindle A, the sup porting collar B fixed thereon, the loosecollar C surrounding the driving-s indle, the thrustbearing arrangedbetween t e top of the su porting-collar and the loose collar C, the ba1- bearing extending round the driving-spindle upon which thesupporting-collar rests the center flange or plate E, the ball-bearingextending round the driving-spindle below the center plate E, the sleeveon ferrule D extending round the driving-spindle, abutting at the oneend the bottom of the supportingcollar and at the other end resting onthe bearing beneath the plate E, the hangers h fixed in the flange orplate E, the levers h pivoted to the hangers h at the one end and attheir other and inner ends engaging the the under side of the bearingbelow the plate or I hand in the presence of two subscribing wit--flange E, the ring or washerf between the nesses. bearing and the leversh, the quill-flange F, the centers 7' fixed in the top of the quill- 5flange F in which the levers h are fulcrumed and the quill G,substantially as described.

In witness whereof I have hereunto set my ALEXANDER MONAMARA.

Witnesses:

CHAS. O. OVENDALE, R. OVENDALE.

